I created a quiz, published it and then took it as a test student to make sure it was correct. (Guess I should've previewed it instead.) Now I can't un-publish it: "Can't unpublish if there are student submissions."

Tom, while you are in as the Test Student there is an option at the bottom right to reset the test student. It’s right by where you go to leave test student view. For a real student there is no way to reset or delete a quiz (or assignment) submission. Students can however resubmit if they need to.

I have been reviewing older questions here in the Canvas Community, and I came across your question. I wanted to check in with you because we have not heard back from you since you first posted this question on January 26, 2018. It looks like Kona Jones replied to you a day later. Have you had an opportunity to review her feedback? Did it help to answer your question? Do you have any outstanding questions for Community members as it relates to your original question? If you feel that Kona's response has helped to answer your question, please feel free to mark it as "Correct". However, if you are still looking for some assistance from the Community, please let us know by posting a message below.

The only other thought I had about this would be to completely delete the "test student" role from you course. (If you cannot do this yourself as an instructor, talk to a Canvas admin at your school, and they should be able to do it for you.) First, in your course, go to "Settings". Next, click on the "Sections" tab. Under the "Course Sections" heading, click on the link for your course (which may be a course name or a course number at your school). You will see a list of students under "Current Enrollments". One of those enrollments will be "Student, Test" with a long string of letters and numbers. Hover over the "Student, Test" user, and you should see a red "X" (again, if you cannot see this, check with your school's Canvas admin). Click it to completely delete the "test student" role from your course...which I *think* would also delete that quiz submission. However, keep in mind that the next time you click on the "Student View" button from within your course "Settings" screen, the "Student, Test" user would show up again.

Since we've not had a lot of new activity in this topic for almost four months and since we've not heard back from you, I am going to mark your question as "Assumed Answered". However, that won't prevent you or others from posting additional questions and/or comments below that are related to this topic. I hope that is alright with you, Tom. Looking forward to hearing back from you soon.